*{
  padding: 0px;
  margin: 0px;
}
html,
body {

  -moz-user-select: none;
  /*火狐*/

  -webkit-user-select: none;
  /*webkit浏览器*/

  -ms-user-select: none;
  /*IE10*/

  -khtml-user-select: none;
  /*早期浏览器*/

  user-select: none;

}
a{
  text-decoration: none;
}
ul,ol{
  list-style: none;
}